import java.util.Scanner;

public class bmi {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        double height = scanner.nextDouble();
        double weight = scanner.nextDouble();
        double bmi=weight/(height*height);
        System.out.println(
                bmi<18.5?"偏瘦":bmi>=18.5&&bmi<20.9?"苗条":bmi>=20.9&&bmi<24.9?"适中":"偏胖"
        );



        //write your code here......


    }
}

